Allow dynamically specifying a resource group name

[christophetd]

It looks like AZURE_RESOURCE_GROUPS doesn't actually restrict the set of hosts considered by the AzureRM inventory plugin

[christophetd]

This is actually not supported by the azure dynamic inventory plugin for Ansible: https://github.com/ansible/ansible/issues/69949

[christophetd]

Options:

• Use the old azurerm_inventory.py script provided by Ansible, which is deprecated but supports runtime configuration via an environment variable
• Set the name of the resource group in domain.yml and read it from both Terraform and Ansible
• Keep as-is and duplicate the resource group name
• Include all resource groups (["*"]) in the configuration of the current dynamic inventory, which might end up hitting unwanted machines

[christophetd]

discussion moved to https://github.com/ansible-collections/azure/issues/152